摘要:隨著人們生活水平的提高，日常的大型活動不斷的增加。聚會、開會等一些活動的人數也在上升。中國是茶的故鄉，在這些活動中品茶又是必不可少的事情。人數的增加，使得茶桌面積增大，使得泡茶者難以兼顧給每個人送茶，設計一種送茶工具來改善這一生活中存在的實際問題。

    本設計制作一款智能小車，來達到自能送茶的目的。本設計是一款以STC89C52單片機為核心控制器，用L293D驅動直流電機工作，控制小車的運行的紅外線循跡、遙控小車。本款小車采用模塊化設計，采用C語言軟件來編寫程序，以四個直流減速電機為驅動電機，通過傳感器來采集信息，送入主控單元STC89C52單片機進行數據處理，處理后將數據傳給驅動芯片L293D對直流減速電機進行驅動，完成相應的操作，來實現紅外線遙控駕駛或自動尋跡駕駛等功能。

關鍵詞：送茶小車；遙控；STC89C52；L293D；HD74HCO4P

ABSTRACT:With the improvement of living standards, the day-to-day large-scale activities continue to increase. Also on the rise in the number of gatherings, meetings and other activities. China is the birthplace of tea, tea is essential in these activities. Increase in the number, making the tea table area increases, making tea and difficult to take into account to each person Songcha design a Songcha tools to improve the practical problems in this life.

　　　Design a smart car, achieved can Songcha purposes. This design is a microcontroller to STC89C52 as the core controller, L293D drive DC motors, the operation of the infrared tracking control car, remote control car. The modular design of this subsection car to write a program using C language software, four DC gear motor for the drive motors, sensors to gather information and data processing into master unit STC89C52 MCU, after processing data to drive chip L293D DC gear motor drive, complete the appropriate action to achieve the infrared remote control to drive or to automatically find track driving.

Key words: Songcha car; Remote control; STC89C52; L293D; HD74HCO4P